activity
20192023
most citedAchieving Near Instance-Optimality and Minimax-Optimality in Stochastic and Adversarial Linear Bandits Simultaneously

8 citations · 23 across the 13 of their papers we have counts for

collaborators

15 papers

cs.LG2023★ 2 cited

Probably Approximately Correct Federated Learning

Xiaojin Zhang, Anbu Huang, Lixin Fan +2

Federated learning (FL) is a new distributed learning paradigm, with privacy, utility, and efficiency as its primary pillars. Existing research indicates that it is unlikely to sim…

cs.LG2023

A Meta-learning Framework for Tuning Parameters of Protection Mechanisms in Trustworthy Federated Learning

Xiaojin Zhang, Yan Kang, Lixin Fan +2

Trustworthy Federated Learning (TFL) typically leverages protection mechanisms to guarantee privacy. However, protection mechanisms inevitably introduce utility loss or efficiency…

cs.LG2023

Theoretically Principled Federated Learning for Balancing Privacy and Utility

Xiaojin Zhang, Wenjie Li, Yiming Li +3

We propose a general learning framework for the protection mechanisms that protects privacy via distorting model parameters, which facilitates the trade-off between privacy and uti…

cs.LG2023

Towards Achieving Near-optimal Utility for Privacy-Preserving Federated Learning via Data Generation and Parameter Distortion

Xiaojin Zhang, Kai Chen, Qiang Yang

Federated learning (FL) enables participating parties to collaboratively build a global model with boosted utility without disclosing private data information. Appropriate protecti…

cs.LG2023

A Game-theoretic Framework for Privacy-preserving Federated Learning

Xiaojin Zhang, Lixin Fan, Siwei Wang +3

In federated learning, benign participants aim to optimize a global model collaboratively. However, the risk of \textit{privacy leakage} cannot be ignored in the presence of \texti…

cs.LG2022★ 5 cited

A Framework for Evaluating Privacy-Utility Trade-off in Vertical Federated Learning

Yan Kang, Jiahuan Luo, Yuanqin He +3

Federated learning (FL) has emerged as a practical solution to tackle data silo issues without compromising user privacy. One of its variants, vertical federated learning (VFL), ha…

cs.LG2022★ 5 cited

Trading Off Privacy, Utility and Efficiency in Federated Learning

Xiaojin Zhang, Yan Kang, Kai Chen +2

Federated learning (FL) enables participating parties to collaboratively build a global model with boosted utility without disclosing private data information. Appropriate protecti…

cs.LG2022★ 1 cited

No Free Lunch Theorem for Security and Utility in Federated Learning

Xiaojin Zhang, Hanlin Gu, Lixin Fan +2

In a federated learning scenario where multiple parties jointly learn a model from their respective data, there exist two conflicting goals for the choice of appropriate algorithms…

cs.LG2021★ 8 cited

Achieving Near Instance-Optimality and Minimax-Optimality in Stochastic and Adversarial Linear Bandits Simultaneously

Chung-Wei Lee, Haipeng Luo, Chen-Yu Wei +2

In this work, we develop linear bandit algorithms that automatically adapt to different environments. By plugging a novel loss estimator into the optimization problem that characte…

cs.DS2020

Improved Algorithm for Permutation Testing

Xiaojin Zhang

For a permutation , a sequence contains a -pattern of size , if there is a sequence of indices $(i_1, i_2,…

cs.LG2020

Adaptive Double-Exploration Tradeoff for Outlier Detection

Xiaojin Zhang, Honglei Zhuang, Shengyu Zhang +1

We study a variant of the thresholding bandit problem (TBP) in the context of outlier detection, where the objective is to identify the outliers whose rewards are above a threshold…

cs.DS2019

Improved Algorithm for Tolerant Junta Testing

Xiaojin Zhang

In this paper, we consider the problem of tolerant junta testing for boolean function. Compared with the prior work by Blais et al., we provide improved results in terms of both th…

cs.LG2019

Automatic Ensemble Learning for Online Influence Maximization

Xiaojin Zhang

We consider the problem of selecting a seed set to maximize the expected number of influenced nodes in the social network, referred to as the \textit{influence maximization} (IM) p…

cs.LG2019

Contextual Combinatorial Conservative Bandits

Xiaojin Zhang, Shuai Li, Weiwen Liu +1

The problem of multi-armed bandits (MAB) asks to make sequential decisions while balancing between exploitation and exploration, and have been successfully applied to a wide range…

cs.CC2019★ 2 cited

Near-Linear Regimes for One-Sided Distribution-Free Junta Testing

Xiaojin Zhang

We study adaptive one-sided distribution-free testing of Boolean -juntas, with membership-query access to the function and sample access to an arbitrary unknown distribution. Fo…